From d6a3c0cfb852dbeee4255e3588e9a1f52e376042 Mon Sep 17 00:00:00 2001 From: Aldy Hernandez Date: Thu, 21 Oct 2021 13:18:49 +0200 Subject: [PATCH] Revert the avoid threading circular paths commit. I've tested this patch on the wrong tree, and picked up the test changes in a pending patch, without which this patch is no longer obvious. Plus, it causes a regression in an invalid test I've recommended we remove. I'm reverting this patch until the dependencies are reviewed. Sorry for the noise. gcc/ChangeLog: * tree-ssa-threadbackward.c (back_threader::maybe_register_path): Remove circular paths check. --- gcc/tree-ssa-threadbackward.c | 4 ---- 1 file changed, 4 deletions(-) diff --git a/gcc/tree-ssa-threadbackward.c b/gcc/tree-ssa-threadbackward.c index 38913b06717c..d94e3b962db4 100644 --- a/gcc/tree-ssa-threadbackward.c +++ b/gcc/tree-ssa-threadbackward.c @@ -140,10 +140,6 @@ back_threader::maybe_register_path () if (taken_edge && taken_edge != UNREACHABLE_EDGE) { - // Avoid circular paths. - if (m_visited_bbs.contains (taken_edge->dest)) - return UNREACHABLE_EDGE; - bool irreducible = false; bool profitable = m_profit.profitable_path_p (m_path, m_name, taken_edge, &irreducible); -- 2.47.2